Which of the following steps are a part of chain reaction during alkane substitution?
I.propagation
II.initiation
III.competition
IV.dehalogenation
V.termination

Question

Quizplus · Accepted Answer

The steps involved in the chain reaction during alkane substitution include initiation, propagation, and termination. During initiation, a halogen molecule is split into two free radicals, which are highly reactive. These free radicals react with an alkane molecule in the propagation step, leading to the formation of alkyl halide and a new free radical. This process is continued until termination, where free radicals react with each other to form stable molecules, or until all the available halogen molecules have been consumed. Dehalogenation is not a part of the chain reaction but rather a separate process that can occur later, where the alkyl halide is converted back into an alkane by removing the halogen atom. Therefore, the correct answer is A, which includes the steps of initiation, propagation and termination, leaving out competition and dehalogenation.

Which of the Following Steps Are a Part of Chain